3a thread class right-hand 0.427" grip length 24 thread quantity per inch 108000 single pounds per square inch shear strength cadmium surface treated unjf thread series
3a thread class right-hand 0.313" grip length 28 thread quantity per inch 156000 single pounds per square inch shear strength nickel surface treated unjf thread series
3a thread class right-hand 0.616" thread length oval countersunk head style 0.865" grip length 24 thread quantity per inch aluminum surface treated unjf thread series
3a thread class right-hand 0.084" thread length flat chamfer head style 80 thread quantity per inch navy special project passivate surface treated unjf thread series
3a thread class right-hand 0.345" thread length dished hexagon head style 0.490" grip length 28 thread quantity per inch cadmium surface treated unjf thread series
right-hand headless (setscrew) head style ffour holes 1.8 mm dia drilled 90.0 degrees apart through hex drive, two holes are located 2.0 mm from drive end 180.0 degrees apart, the other two are located 4.0 mm from drive end 180.0 degrees apart
2a thread class right-hand 0.408" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unc thread series
Used on fire pump,serial no. 602775 thru 782,board 140 ft wtgb u. s. coast guard vessels. 3a thread class right-hand 1.250" thread length hexagon head style 13 thread quantity per inch unc thread series
